What Is A Bolt Pattern?

What Is A Bolt Pattern?


Bolt pattern is expressed as the number of studs or holes x the distance between 2 specified studs/holes. For example, the bolt pattern 5 x 4.5 means 5 studs/holes with 4.5" between the centers of the studs/holes opposite one another. (On a 5-lug hub, count the 2nd adjacent stud from your initial stud.) Bolt pattern can also be expressed in metric form, with 4 x 100mm signifying 4 studs/holes with 100 millimeters between the centers of the studs/holes opposite one another.


It's easy to measure the pattern on vehicles with 4, 6 or 8 studs/holes, just measure between the centers of the studs opposite each other. 5-lug patterns are more difficult, as measuring per the illustration may not give the exact dimension. All wheel manufacturers have the bolt pattern information for every vehicle they make wheels for, so as long as the make, model and year of vehicle is furnished, a wheel with the right pattern can be supplied.